Method and device for the customization of a helmet with night vision optical device

Abstract

The disclosed method provides for the precise positioning of the night vision device with respect to the helmet to which it has to be fixed, in order that the user may enjoy optimum viewing conditions. This method consists in determining the position of the support of the device with respect to significant points of the user's head, in contact with the helmet, and then in copying these relative positions on a supporting tool bearing the helmet and the support of the night vision device, and in forming thickness shims between the helmet and the support.

What is claimed is: 
     
       1. A method for the precise positioning of the optical system of a night vision device with respect to the user's eyes wherein, after the user's eye has been positioned with respect to reference zones of the inner surface of the helmet, these reference zones are copied on a support tool, the helmet being placed on these zones in a position corresponding to the position that it would have on the user's head, and then a fastening support of the night vision device is fixed to the supporting tool in a position corresponding to said position of the eye with respect to the reference zones, and a thickness shim is formed between the fastening support of the night vision device and the outer shell of the helmet. 
     
     
       2. A method according to claim 1, wherein the reference zones are those of the rear edge of the inner shell of the helmet, as well as the zone in contact with the top of the user's cranium. 
     
     
       3. A method according to claim 1, wherein the positional symmetry of the helmet is adjusted on the supporting tool. 
     
     
       4. A method according to claim 1, wherein the rolling motion of the helmet is adjusted on the supporting tool. 
     
     
       5. A device for the precise positioning of the optical system of a night vision device for a helmet with respect to the user's eyes, comprising a measuring stand comprising adjustable support means for the helmet, adjustable stops copying the relative positions of reference zones corresponding to supporting surfaces and an adjustable fastening element for the support of the night vision optical device. 
     
     
       6. A device according to claim 5, comprising adjustable means that support the lower lateral ends of the helmet. 
     
     
       7. A device according to claim 5 or 6, comprising a V-shaped cap that is symmetrical to the plane of symmetry of a second stand, applied to the outer shell of the helmet, close to its top, to adjust its positioning symmetry.